Kitano K, Tada K, Shibata T, Yoshida T
Department of Orthopaedic Surgery, Kitano Orthopaedic Clinic, Osaka Rosai Hospital, Osaka University Medical Hospital, Japan.
J Hand Surg Am. 1996 Nov;21(6):992-6. doi: 10.1016/S0363-5023(96)80306-6.
Isolated extension of the index finger after extensor indicis proprius (EIP) transfer was studied. In cadavers, the extensor digitorum communis (EDC) muscle of the index finger received distinct innervation from the posterior interosseous nerve and was well separated, with its own innervation, from the other EDC muscle. Examination of von Schroeder's type I juncturae tendinum (JT) between the index and long finger showed two types: von Schroeder type IA (16 of 27 hands; 59%) was fascia only; von Schroeder type IB (11 of 27 hands; 41%) was thin filamentous bands. In clinical cases, 3 hands were type IA and 10 were type IB. Retained independent index finger extension was obtained in all patients with excision of the JT between the index and long finger following EIP transfer.
对示指固有伸肌（EIP）转移术后示指单独伸展情况进行了研究。在尸体研究中，示指的指总伸肌（EDC）肌肉接受骨间后神经的独特支配，并且与其他指总伸肌肌肉有其自身的支配神经，相互分离良好。对示指与中指之间的施罗德I型腱联合（JT）检查发现有两种类型：施罗德IA型（27只手中的16只；59%）仅为筋膜；施罗德IB型（27只手中的11只；41%）为细丝状带。在临床病例中，3例为IA型，10例为IB型。所有接受EIP转移术后切除示指与中指之间JT的患者均获得了保留的独立示指伸展功能。
